<br><font size=2 face="sans-serif">Hi,</font>
<br>
<br><font size=2 face="sans-serif">I have sucessfully converted the ESRI
ascii grid file to Geotiff using gdal_translate. But using tiffinfo on
newly created file gives me something like this:</font>
<br>
<br><font size=2 face="sans-serif">TIFFReadDirectory: Warning, Unknown
field with tag 33550 (0x830e) encountered.</font>
<br><font size=2 face="sans-serif">TIFFReadDirectory: Warning, Unknown
field with tag 33922 (0x8482) encountered.</font>
<br><font size=2 face="sans-serif">TIFFReadDirectory: Warning, Unknown
field with tag 42113 (0xa481) encountered.</font>
<br><font size=2 face="sans-serif">TIFF Directory at offset 0x900008 (9437192)</font>
<br><font size=2 face="sans-serif"> Image Width: 1427 Image Length:
1427</font>
<br><font size=2 face="sans-serif"> Tile Width: 256 Tile Length:
256</font>
<br><font size=2 face="sans-serif"> Bits/Sample: 32</font>
<br><font size=2 face="sans-serif"> Sample Format: IEEE floating
point</font>
<br><font size=2 face="sans-serif"> Compression Scheme: None</font>
<br><font size=2 face="sans-serif"> Photometric Interpretation: min-is-black</font>
<br><font size=2 face="sans-serif"> Samples/Pixel: 1</font>
<br><font size=2 face="sans-serif"> Planar Configuration: single
image plane</font>
<br><font size=2 face="sans-serif"> Tag 33550: 5.000000,5.000000,0.000000</font>
<br><font size=2 face="sans-serif"> Tag 33922: 0.000000,0.000000,0.000000,6400997.500000,5041132.500000,0.000000</font>
<br><font size=2 face="sans-serif"> Tag 42113: -999</font>
<br><font size=2 face="sans-serif">TIFF Directory at offset 0x900230 (9437744)</font>
<br><font size=2 face="sans-serif"> Subfile Type: reduced-resolution
image (1 = 0x1)</font>
<br><font size=2 face="sans-serif"> Image Width: 714 Image Length:
714</font>
<br><font size=2 face="sans-serif"> Tile Width: 128 Tile Length:
128</font>
<br><font size=2 face="sans-serif"> Bits/Sample: 32</font>
<br><font size=2 face="sans-serif"> Sample Format: IEEE floating
point</font>
<br><font size=2 face="sans-serif"> Compression Scheme: None</font>
<br><font size=2 face="sans-serif"> Photometric Interpretation: min-is-black</font>
<br><font size=2 face="sans-serif"> Samples/Pixel: 1</font>
<br><font size=2 face="sans-serif"> Planar Configuration: single
image plane</font>
<br><font size=2 face="sans-serif">TIFF Directory at offset 0x9003f2 (9438194)</font>
<br><font size=2 face="sans-serif"> Subfile Type: reduced-resolution
image (1 = 0x1)</font>
<br><font size=2 face="sans-serif"> Image Width: 357 Image Length:
357</font>
<br><font size=2 face="sans-serif"> Tile Width: 128 Tile Length:
128</font>
<br><font size=2 face="sans-serif"> Bits/Sample: 32</font>
<br><font size=2 face="sans-serif"> Sample Format: IEEE floating
point</font>
<br><font size=2 face="sans-serif"> Compression Scheme: None</font>
<br><font size=2 face="sans-serif"> Photometric Interpretation: min-is-black</font>
<br><font size=2 face="sans-serif"> Samples/Pixel: 1</font>
<br><font size=2 face="sans-serif"> Planar Configuration: single
image plane</font>
<br><font size=2 face="sans-serif">TIFF Directory at offset 0x9004dc (9438428)</font>
<br><font size=2 face="sans-serif"> Subfile Type: reduced-resolution
image (1 = 0x1)</font>
<br><font size=2 face="sans-serif"> Image Width: 179 Image Length:
179</font>
<br><font size=2 face="sans-serif"> Tile Width: 128 Tile Length:
128</font>
<br><font size=2 face="sans-serif"> Bits/Sample: 32</font>
<br><font size=2 face="sans-serif"> Sample Format: IEEE floating
point</font>
<br><font size=2 face="sans-serif"> Compression Scheme: None</font>
<br><font size=2 face="sans-serif"> Photometric Interpretation: min-is-black</font>
<br><font size=2 face="sans-serif"> Samples/Pixel: 1</font>
<br><font size=2 face="sans-serif"> Planar Configuration: single
image plane</font>
<br>
<br><font size=2 face="sans-serif">The file is displayed correctly but
when I try to build the overviews using gdaladdo I get warnings:</font>
<br>
<br><font size=2 face="sans-serif">Warning 1: TIFFReadDirectory:LDAY.tif:
Wrong "StripByteCounts" field, ignoring and calculating from
imagelength</font>
<br><font size=2 face="sans-serif">Warning 1: TIFFReadDirectory:LDAY.tif:
Wrong "StripByteCounts" field, ignoring and calculating from
imagelength</font>
<br>
<br><font size=2 face="sans-serif">New file with overviews is created and
everything looks fine with gdalinfo, but tiffinfo gives the same output
as before. Is this something I need to care about or I can just ignore
it?</font>
<br>
<br><font size=2 face="sans-serif">regards, dejan</font>